Journal ArticleDOI
Polymer-layered silicate nanocomposites: preparation, properties and uses of a new class of materials
TLDR
In this article, a review of polymer-layered silicate nanocomposites is presented, where the polymer chains are sandwiched in between silicate layers and exfoliated layers are more or less uniformly dispersed in the polymer matrix.Abstract:
This review aims at reporting on very recent developments in syntheses, properties and (future) applications of polymer-layered silicate nanocomposites. This new type of materials, based on smectite clays usually rendered hydrophobic through ionic exchange of the sodium interlayer cation with an onium cation, may be prepared via various synthetic routes comprising exfoliation adsorption, in situ intercalative polymerization and melt intercalation. The whole range of polymer matrices is covered, i.e. thermoplastics, thermosets and elastomers. Two types of structure may be obtained, namely intercalated nanocomposites where the polymer chains are sandwiched in between silicate layers and exfoliated nanocomposites where the separated, individual silicate layers are more or less uniformly dispersed in the polymer matrix. This new family of materials exhibits enhanced properties at very low filler level, usually inferior to 5 wt.%, such as increased Young’s modulus and storage modulus, increase in thermal stability and gas barrier properties and good flame retardancy.read more
Citations
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Journal ArticleDOI
Preparation and Characterization of Silica/Polyamide-imide Nanocomposite Thin Films
TL;DR: The high thermal stability and low coefficient of thermal expansion showed that the nanocomposite films can be widely used in the enamel wire industry.
Journal ArticleDOI
Clay-polymer nanocomposite material from the delamination of kaolinite in the presence of sodium polyacrylate.
TL;DR: The delamination was carried out by the reaction of sodium polyacrylate with kaolinite whose internal aluminol surfaces were previously grafted with triethanolamine and subsequently quaternized with iodomethane (TOIM-K) to form an extended lamellar inorganic polycation.
Journal ArticleDOI
Hybrid nanocomposites: advanced nonlinear method for calculating key kinetic parameters of complex cure kinetics.
TL;DR: It appears that the reaction mechanism changes if MMTm is added to the curing system, and there is an increase of the efficiency of collisions in presence of M MTm at the beginning of the cure and the frequency of diffusion jumps at the later stage of the reaction.
Journal ArticleDOI
New covalent bonded polymer–calcium silicate hydrate composites
Alexandre Franceschini,Sébastien Abramson,Valerio Mancini,Bruno Bresson,Christophe Chassenieux,Nicolas Lequeux +5 more
TL;DR: In this article, two sets of hydrosoluble copolymers, both containing trialkoxysilane (T-silane) and/or methyldialkoxysile (D-silANE) functions, were synthesized.
Journal ArticleDOI
Gallery structure and exfoliation of organophilized montmorillonite: effect on composite properties
András Pozsgay,András Pozsgay,Tünde Fráter,Tünde Fráter,László Százdi,László Százdi,Péter Müller,Péter Müller,István E. Sajó,Béla Pukánszky,Béla Pukánszky +10 more
TL;DR: Wyoming montmorillonite was organophilized to different extents with N-cetylpyridinium chloride and its gallery structure was studied by WAXS as mentioned in this paper.
References
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Journal ArticleDOI
Mechanical properties of nylon 6-clay hybrid
Yoshitsugu Kojima,Arimitsu Usuki,Masaya Kawasumi,Akane Okada,Yoshiaki Fukushima,Toshio Kurauchi,Osami Kamigaito +6 more
TL;DR: In this paper, the properties of nylon 6-clay hybrids, such as molecular composites of nylon and silicate layers of montmorillonite and saponite, NCH's and NCHP's, respectively, have been synthesized.
Journal ArticleDOI
Synthesis of nylon 6-clay hybrid
Arimitsu Usuki,Yoshitsugu Kojima,Masaya Kawasumi,Akane Okada,Yoshiaki Fukushima,Toshio Kurauchi,Osami Kamigaito +6 more
TL;DR: In this paper, the carboxyl and amino end groups were attributed to ammonium cations (-NH3+) of nylon molecules, because the difference agreed with the anion site concentration of the montmorillonite in NCH.
Journal ArticleDOI
Flammability and thermal stability studies of polymer layered-silicate (clay) nanocomposites
TL;DR: In this article, an overview of the research to date on the use of clays, dispersed at the nanometer level, in polymers for improving thermal stability and flammability is presented.
Journal ArticleDOI
Synthesis and properties of polyimide–clay hybrid
TL;DR: A polyimide hybrid with montmorillonite clay mineral has been synthesized from a dimethylacetamide (DMAC) solution of poly(amic acid) and a DMAC dispersion of montmoroniite intercalated with an ammonium salt of dodecylamine as mentioned in this paper.
Journal ArticleDOI
Preparation and Mechanical Properties of Polypropylene−Clay Hybrids
TL;DR: In this paper, the dispersibility of 10-A-thick silicate layers of the clays in the hybrid was investigated by using a transmission electron microscope and X-ray diffractometer.
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